Barrel-hoop-planing machine



(No Model.) l 2 Sheets-sheet .1. H. L'. CAMPBELL.

BARREL HOOP :PLANING MAG'HLNB.

No. 272,029. Patented Feb.r13,1883.

JV'J.

I T "f 7,3 l T7.

l J 5 6 540111 Y.

f. I 503// zal' L y, u

i T II `vnu (No Model.) 2 Shets-Sheret 2.

HQ F. CAMPBELL.

BARRL Hoor PLANING MACHINE.

No. 272,029. Patented Peb. 13,1883.

UNITED STATES PATENT FFICE..

` BARREL-HooP-PLANING MACHINE.

SPECIFICATION forming` part of Letters Patent No. 272,029, dated February 13, 1883, Application filed March 31, 1882. (No model.)

\ Hampshire, have invented an Improvementin Placing-Machines, of which the following description, in connection with the accompanying drawings, is a specication.

This invention is an improvement on United States Patent No. 248,021, granted to lne October l1, 18S1,and is more especially adapted, as herein embodied, to the class of planing-machine for dressing barrelhoops; but some of 1n yimprovements,tobehereinafterdescribedas, for instance, the presser-bar-may be generally applied to wood-planing machines with good results. In my patented machinereferred to all the hoops being dressed were acted upon `by one long presser bar, which inado it difficult, when running more than two hoops simultaneously, toproperly-act upon a third thinner one, which thinner one wasapt to be notched, and in case of a crook or knot to be injured or broken, because its knot or crook was not properly embedded into the elastic roller below the cutter. In this, my present invention, I have divided the presser bar to form a series of presser-feet, and have provided a foot for each individual hoop, so that its knots or crooks will be properly embedded into the surface of the elastic bed-rollervD, no matterwhat may be the thickness or shapeofthe hoopnextto it,orofany' other hoop being dressed simultaneously by the said revolving cutter-head.. These presser-feet are so shaped and mounted with relation to the` center of rotation of the revolving cutter-head that the presser-feet rise independently in the arc of a circle eccentric to the axis of thecutter-head; but the lower extremity of each foot,

or where it bears upon the hoop, will, as it rises, be maintained at the same uniform. distance from the cutting-ed ges of the knives of the cutter-head, thus better insuring a smooth, even surface,especiallyincross-grained gnarly wood.

In practice, I have found such movement of the presser-feet to be of great value, not only with the` classof wood mentioned,butalso aiding materially in straightening crooked hoops, such as sawed bya machine described in my application No. 47,697, tiled December 12, 1881, to which reference may be had. On the occurrence of a sharp crook in any on-e hoop the presser-foot (it bearin g thereon immediately in front. of the cutterhead) rises as the abrupt part of the crook arrives in front of the cutterhead, which 4enables the cutter head to dress the hoop evenly at the crook,` while the luted drawing-rollers at the rear of the cutter-head draw and straighten thehoop over the elastic bed-roll as soon as the hoop is rendered sutciently thin and lexble by the action of the knives of the cutter head, so that the upper side of the hoop as it passes under lthe cutterhead and between it and the elasticbed-roller presents a plane surface, and renders it almost impossible to injure the hoop, as would be the case on the occurrence ot a crook which was not thus straightened. Each presser foot is held down upon the hoop4 by a suitable lever,

the power of which maybe changed at will, according to the work being done. In my present machine I have provided a series of guides having independent rollers to act upon the edges of each hoop as it passes into the machine to be dressed, thus dispensing with the necessity of guiding the hoops by hand in their passage through the machine, thus making the machine practically automatic after the hoops are entered between the feed-rollers.

Figure l represents in front elevation a planing-machine embodying my presen tin vention. Fig. 2 is a longitudinal vertical section thereof on the line x as, Fig. l; Fig. 3, a side elevation on a larger scale of one of m yim proved presserfeet, the curved guide for it being shown in section; Fig. 4, a rear side elevation of a presserfoot. Fig. 5 is an enlarged detail of part of l the hoop-guide detached from the machine.

In the drawings likeletters denote like parts. The frame-work A, the elastic bed-roller D,

the feed-rollers H and A', the drawing-rollers Gr F, the rear presser-bar, 0, the revolving cutter-head B, the bed which holds the bearings for the rollers A' D F Gr, and the means for elevating and depressing the said bed are substantially as in my patent referred to, where .like parts are designated by like letters and need not be herein described. Instead of the uppersmooth drawing-rollers shown in the said patent, I have herein employed two rollers, a2

112, which are corrugated longitudinally to en-` able them to take rm hold of and draw the crooked hoops so as to straighten them while passing over the bed-roller D, after, however,H they have been reduced in thickness by the action of the usual knives of the cutter-head B.

In frontof the feed-rollers A E, l have placed a hoop-guide, it being composed of a rectangular frame, C2, properly secured to the adj ustable bed, which I have marked d2, and ot' a series of vertically-placed rollers, e2, the said rollers, by their location in the frame c2, forming as many spaces or passages as there are hoops to be dressed when the machine is performing its maximum work. These rollers will vform the sides of each of these guide-passages, and will turn independently upon their axes, thereby forcing the hoops from side to side and guiding them in the proper channel to the feedrollers and between the cutter-head and bedroller.

The presser-feet are composed of curved metal plates f2, dressed smoothly upon their v concaved facesr and shaped as shown in the drawings, Fi g. 3. kEach presser-foot has attached to the lugs g2, at its rear side, by suitable screws 2, two curved arms h2 m2, which receive between them two rollers, l2 n2, and each curved arm has an ear, 3.

Attached to and extended across the frame work A, from side to side, is a strong curved metal bar or presser-foot carrier, o2, upon which each presser-foot is placed, the said bar being extended through the curved slotsp2 of the presser-feet, the said slots being longer than the said bar is Wide, so that the said presserfeet are free to rise and fall, independently guided, however, in a curved path corresponding with the' curve of the carrier or bar o?, the` latter being so shaped or curved, substantially as shown, with relation to the arc described by the edges of the knives of the revolving cutter-head that the lower end of each presserfoot, whatever may be-its degree of elevation, by reason of the thickness or crook-edness'ot' the hoop beneath it, will always leave the same or a like-space between the edges of -th'e `said knives and the lower extremity of the presserfoot.

'lhe rolls Z2 n2 of each presser-foot are ot' such diameter with relation to the thickness of the curved arms vh2 m2 that the said rollers and not the arms come in contact With the convexed side of the carrier or bar o2, thus permitting the easy rise and fallof each presser-foot with the minimum of friction. The ears 3 of the arms hl m2 have connected with them bya pin,4, a link, v5, which, at its upper end, is joined with a lever, 6, pivoted at 7 to a suitable standard, r2, rising from the side of' the frame-work A, there being one such standar d at each end of the carrier-bar. The fulerum 7, a rod, is common to all the levers 6, there being one lever for each vpresst-r-foot. 'lhe levers 6 have on them adjustable 'weights 8 of suitable-capacity to maintain proper pressure ofthe feet upon the hoop beneath them, the thicker the hoop and the largeritsknots, warts, and crooks the greater pressure necessary to be applied, and vice versa.

The operator, on the occurrence of a large knot or bad crook in a hoop, may press upon the lever of the-presser-footholding that hoop while the said large knot or crook is passing between-the cutter-head and bed-roller.

This my present machine will have the carrier-bar o, on which the presser-feet are hung and guided, supported on india-rubber blocks, such as shown in Fig. 5 of my patent referred to, and marked by the letter 1'., to thus enable me to carefully adjust thelower extremities of 8o the presser-feet when at rest, to thus place them in their proper position with relation to the arc described bythe edges of the revolv- A ing knives; but thereafter in operation-the pressersactindependently,asstated,andadapt themselves to any variation in the hoops un- Instead of employing several independent presser-feet side by side on one common carrier-bar, o2, as described, I might, for use in `an ordinary wood-planing machine, employ the said carrier-bar and place on it but one press- 'er-foot to bear upon and hold down the Work to pass under it. So I do not limit my invention tothe width of my presser-foot.

rJhe rollers F G, by their rubber surfaces, prevent marring the bark on the hoops.

I claiml. The cutter-head and elastic bed-roller, combined with the india-rubber-covered'drawing-rollers F Gr and the corrugated drawingrollers b2 a2 above said rollers F G, respectively, substantially as and for the purpose described.

2. The cutter-head, bed-roller, and feed-rollers, combined with the guide having a series of passagesfaud provided with guide-rollers to bear aganstopposite sidesv of and direct each hoop independently, substantially as described. 3. -Thepresser-foot provided with the curved plate f?, the friction-rollers l2 n2, andarran ged upon the curvedsupporting-bar o2 to rise and yfall under the guidance of said rollers, connbined with the 'cutter-head, and means to support the material While being planed, substantially as and-,for the purpose described.

'4. The combina-tion of a presser-foot having acurvediplatajf", curved arms h2 m2, se cured thereto, rollers ZZ a2, curved supportingbar o2, upon which the presser-foot rises and falls under the. guidance of said rollers, and the cutter-head and an elastic bed-roller, substantially as shown and described.

5. In a planing-machine,VV the presser-foot, its carrier-bar, and ears 3 on said presser-foot, combined with the lever 6, fulcrumed atf7 to the standard r2, and connected by lin-k 5 to theA ears v3,y and carrying an adjustable weight to Yvary-the pressure of said presser-foot, the

-IOO

. construction and arrangement being` and 0perating" substantially as shown and described. to this specieation in the 6. The cutter-head, elastic bed-roller, thesescribing Witnesses. ries of presser-feet, the curved carrier-bar, and HENRY 5 means to vary the pressure of the said feet; on the material being' planed, combined with the guide having' a. series of passages and rollers, to operate substantially as described.

Witnesses: Y

G. W. GREGORY, W. H. SrGsTON.

In testimony-whereof I have signed my name presence of two subro F. CAMPBELL. 

